WO2011047810A1

WO2011047810A1 - Transfer device for transferring a folding box

Info

Publication number: WO2011047810A1
Application number: PCT/EP2010/006316
Authority: WO
Inventors: Markus Speck
Original assignee: Iwk Verpackungstechnik Gmbh
Priority date: 2009-10-20
Filing date: 2010-10-15
Publication date: 2011-04-28
Also published as: MX2012004495A; EP2490887A1; BR112012009209A2; BR112012009209B1; US20120228086A1; DE102009050092A1; EP2490887B1; US8919533B2; CN102666081A

Abstract

The invention relates to a transfer device for transferring a collapsed folding box to a transporting conveyor device while simultaneously setting up said folding box comprising a rotationally driven support part, which can be rotated about a rotational axis, and at least one further rotationally driven support part rotating about the rotational axis coaxially to the support part. In a receiving station, the folding boxes are received by the holding device and are transported on a curved path to a transfer station, and from there to the transporting conveyor device. The support parts perform a rotational movement at a rotational speed, which changes during a revolution, and a mutual relative rotation. Each support part supports a plurality of holding devices, which are distributed over the circumference, wherein the holding devices of the support parts are preferably arranged alternately consecutively in the circumferential direction.

Description

Transfer device for transferring a folding box

The invention relates to a transfer device for transferring a flat carton to a further conveying device with simultaneous erection, with a rotationally driven support member which is rotatable about an axis of rotation, and with at least one rotationally driven further support member, which is rotatable coaxially to the support member about the axis of rotation wherein the supporting parts each carry at least one holding device and perform a rotational movement with a rotational speed changing during one revolution and a mutual relative rotation, wherein the folding carton can be taken over by the holding device in a transfer station and transported on a curved path to a transfer station and there to the further Conveying device can be transferred.

Such a transfer device is used, for example, in a cartoning machine, in which it is necessary, before feeding a product to be packaged, first to erect a folding box in a folded-flat state and to place it in a further conveyor belt. Device, which is usually designed as a belt or chain conveyor to provide.

In a transfer device of known construction, as shown for example in DE 198 01 194 AI, the cartons are in a stacked state in a magazine before, in each case the lower carton of the stack of a holding device, which is usually configured in the form of a suction device, taken and removed from the magazine. The holding device is attached to a support part, which forms a planetary part of a planetary gear, so that the holding device is fed on a cycloid path of the secondary conveyor and stored in a cell formed there. During the movement along the cycloid track, the carton is erected by stops and a Aufrichtfinger.

Compared to a pure circular movement, the formation of the cycloidal track has the advantage that during the cycloidal movement several reversal points are formed, in which the holding device is moved at a reduced speed. This is necessary to ensure an exact removal of the carton from the magazine, a precise erection of the carton and a correct filing of the carton on the secondary conveyor.

In practice, however, it has been shown that, in a further increase in the performance of the transfer device problems occur especially in the removal of the carton from the magazine, since the forces acting there bring the risk that the of the holding device taken carton due to the high removal speed several overlying cartons with tearing out of the magazine, which then fall loose in the transfer ^¬ device and can hinder this in their operation. In order to achieve a sufficient period for the carton for the takeover by the holding device, a very complicated planetary gear with superimposed correction movements is necessary, which is very expensive in construction and thus costly.

From DE 198 45 384 AI a transfer device according to the preamble of claim 1 is known. In such a transfer device, a plurality of independent support members are provided, each carrying a holding device in the form of a nipple. The support members are rotatable about a common axis of rotation and each have their own drive motor. In this way, the holding devices can be moved during one revolution with varying rotational speed and perform a mutual relative rotation, whereby the movements to the respective required function, i. is adaptable to the takeover of the carton or their transfer to the secondary conveyor. However, the design effort is very high and the transfer device is relatively expensive, since each fixture requires its own drive motor. Also for reasons of space, the number of holding devices and thus the performance of the transfer device is severely limited.

The invention has for its object to provide a ^{Übergabevor ¬} direction of the type mentioned, which has a konstruk ^¬ tively simple structure and a reliable transfer ensures the carton to the conveyor even at high speeds.

This object is achieved by a transfer device having the features according to claim 1. It is provided that each support member carries a plurality of distributed over the circumference arranged holding devices.

According to the invention, the basic idea is not to assign each holding device its own drive, but to subdivide the holding devices into several groups, the holding devices of each group being arranged on a common rotationally driven carrier part and rotating therewith. Thus, for example, it is provided that in addition to a rotationally driven support member, which carries a plurality of circumferentially arranged holding devices, in particular in the form of sucking a first group, at least one rotationally driven further support member is provided which also has a plurality of circumferentially spaced holding devices, in particular Form of suckers of a 2nd group carries and which can be rotated coaxially to the support member of the 1st group around the axis of rotation. Each of the two supporting parts carries out a rotary movement with a rotational speed which changes during one revolution. This makes it possible that a holding device ^¬ example in the region of the transfer station, in which it receives a folding box, is moved at a much lower rate than during its movement between the individual work stations. In order that the reduction of the rotational speed of a holding device does not lead to a reduction in the performance of the transfer device in certain sections of its rotary movement beacons, the two carrying parts can be mutually displaced. Perform a rotation. This means that the support member of the 1st group can be moved at high speed in the direction of rotation, while the other support member of the 2nd group at the same time has a reduced rotational speed, for example, to pick up or drop a carton. Since the support parts are moved in sections with higher and lower rotational speed, this difference compensates over a complete revolution of the support parts again, so that after completion of a revolution, the support members and their holding devices again have the assumed position at the beginning of the rotation starting position.

In a possible embodiment of the invention can be provided that exactly two support members are provided, each carrying three to five holding devices and in particular four holding devices. Thus, six to ten and preferably eight holding devices are arranged on the two supporting parts, for which only two drive motors are necessary.

In an alternative embodiment of the invention exactly three support members may be provided, each carrying two to four holding devices and preferably three Hal ^¬ tevorrichtungen. In this way, a total of six to twelve and preferably nine holding devices are provided, for the three drive motors are necessary.

In a preferred embodiment of the invention it is provided that the holding devices of the supporting parts are arranged alternately successively in the circumferential direction. If two support members are provided, the holding devices of the first support member to the holding devices of the 2. carrying part, ie the arrangement follows a 1-2-2 1-2-2 row ....

If three supporting parts are provided, the arrangement of the holding devices of the first supporting part, the second supporting part and the third supporting part is preferably provided in the row 1-2-3-1-2-3.

In a possible embodiment of the invention can be provided that each support member is formed by a disc-like wheel, for example in the form of a circular plate, wherein the wheels or plates are preferably arranged parallel to each other and rotate about a common axis of rotation.

The support members are preferably independently driven by means of a drive device. The drive device is, in particular, a plurality of servomotors, wherein each support part is assigned a servomotor, so that the support parts can be rotated completely independently of each other.

Each support member should have at least three holding devices, which are preferably distributed uniformly over the circumference of the support member. In the arrangement of four holding devices per support member they are arranged in a gegen ^¬ side winding offset of 90 ° in the circumferential or rotational direction, so that always two holding devices diametrically opposed dia. In particular, the holding devices should be arranged on the support part so that there is a holding device in the transfer station for delivering the carton to the secondary conveyor, when another holding device of this support partly and in particular the diametrically opposite holding device of this support member is in the transfer station to take over a carton, as these two stations require a relatively low rotational speed of the support member to ensure safe handling of the carton.

The supporting parts are rotated about a common axis of rotation. Preferably, the holding devices are fixedly connected to the respective support member, so that they also perform a pure rotational movement, i. be moved on a circular path. In addition, however, it may also be provided to additionally impose on each holding device a movement directed radially outwards, for example via a curved path, should this be necessary for the takeover of the folding box, its erection or its transfer.

In a preferred embodiment of the invention, it is provided that the cartons are supplied to the transfer station in an isolated row and are taken over by the holding devices in each case already in an isolated form. It has been shown that the acquisition of an already simplistic ^¬ camping folding box can be done by the holder covering essential ^¬ offer much better speed than the taking of a magazine stack. In order to increase the efficiency of the transfer device, the cartons can already be separated from the transfer station and then in a row successively the transfer station supplied ^¬ leads, wherein the holding devices in each case takes over the front carton folding carton row. In a preferred embodiment of the invention, it is provided that each holding device is associated with a Aufrichtorgan in the form of a Aufrichtfingers, which is movable by means of a Aufricht ^¬ gear. The righting gear is preferably ^¬ controlled via a curved path, so that the Aufrichtfinger performs a defined pivoting movement during the rotational movement of the respective support member and ensures that the carton is erected.

In known manner, a Aufrichtstation can be arranged between the transfer station and the transfer station, in which the folding box is still in the flat state against a stop or a counter sucker driven and then raised at least partially when pulling. In order to increase the efficiency of the transfer device, it is provided in a further development of the invention that the counter sucker follows the rotational movement of the folding box in sections. This can be achieved either by moving the counter sucker tangentially to the rotational movement of the supporting part or the respective holding device. Alternatively, however, it is also possible to store the counter sucker on a rotating support and to synchronize in its speed with the rotational movement of the holding devices, that the sucker and the carton carrying the holding device are arranged in a state of their movements immediately opposite each other.

Further details and features of the invention will become apparent from the following description of an embodiment with reference to the drawings. Show it: 1 is a schematic view of a first embodiment of the transfer device according to the invention in an initial state,

Fig. 2, the transfer device according to Figure 1 in a second

Phase of delivery,

3 shows the transfer device according to FIG. 1 in a third embodiment. FIG.

Phase of delivery,

4 shows the transfer device according to FIG. 1 in a fourth embodiment. FIG.

Phase of delivery,

5 shows the transfer device according to FIG. 1 in a fifth embodiment. FIG.

Phase of delivery,

6 shows the transfer device according to FIG. 1 in a sixth

Phase of delivery,

Fig. 7, the transfer device according to Figure 1 in the final phase of the transfer and

Fig. 8 is a schematic view of a second embodiment of the transfer device according to the invention.

Figures 1 to 7 show a first embodiment of a transfer device 10 according to the invention in different phases of the transfer process. The transfer device 10 has a base part 19 on which a first support part 11, which in the illustrated embodiment has the shape of a substantially circular plate or disc-shaped wheel, is rotatably supported by a pivot bearing 24 about a rotational axis D perpendicular to the plane of the drawing , In the peripheral region of the first support member 11 four brackets 13.1 are formed, on each of which a righting gear 14 and a radially outwardly facing holding device 17 are mounted in the form of a nipple. The Aufrichtgetriebe 14 is associated with a Aufrichtfinger 16 and the control of Aufrichtgetriebes 14 a cam roller 15 is provided, which rolls in a groove-like cam track 18 which is formed in the base part 19.

The first support member 11 has four brackets 13.1 and a corresponding number of holding devices 17, Aufrichtgetrieben 14, Aufrichtfingern 16 and cam rollers 15, wherein for reasons of clarity, only two corresponding units are shown. The four brackets 13.1 are equally distributed over the circumference of the first support member 11, i. arranged in a mutual angular offset of 90 ° in the circumferential direction.

The transfer device 10 further comprises a 2.

Support member 12 which is also formed in the illustrated embodiment in the form of a substantially circular plate or a disc-shaped wheel and is rotatably supported about the pivot bearing 24 about the rotational axis D. The second support member 12 also has four circumferentially equally spaced, outwardly facing brackets 13.2 on which in each case a Aufrichtgetriebe 14 with a Aufrichtfinger 16 and a radially outwardly facing holding device 17 are arranged in the form of a sucker in the illustrated manner. The brackets 13.2 and thus the components attached thereto are distributed uniformly over the circumference of the second support member 12 and thus arranged in a mutual angular offset of 90 ° in the circumferential direction, wherein for reasons of clarity in the Figures only one of the brackets 13.2 with a Aufrichtge- gear 14, a Aufrichtfinger 16 and a holding device 17 is shown.

In order to better follow the movement of the individual components during the various, shown in the figures phases of transfer, the brackets 13.1 of the 1st support member 11 with the numeral "1" and the brackets 13.2 of the 2nd support member 12 with the numeral " 2 "again marked extra.

As Figure 1 shows, the brackets 13.2 of the second support member 12 are aligned in the initial state shown there in each case at an angular offset of 45 ° between two adjacent brackets 13.1 of the first support member 11, so that the holding devices 17 of the 1st and the 2nd Support member 11, 12 are arranged alternately sequentially in the circumferential direction or direction (sequence: 1-2-1-2-1-2 ...).

In the upper part of the transfer device 10, a transfer station 30 is provided. The transfer station 30, which is not shown in detail, flat-lying cartons FS are fed in a row in already isolated form, as indicated by the arrow Z. In the direction of rotation, ie in the counterclockwise direction by approximately 90.degree. Offset from the transfer station 30, an erection station 31 is provided, of which also only schematically a counter sucker 25 is shown, which is connected to a holder, not shown, parallel to the axis of rotation D extending axis is rotatably mounted and thus in a rotational position in which it faces the transfer device 10, with a carried by a holding device 17 folding box FS can come into abutment, which later in the Individual is explained. The rotational movement of the counter sucker 25 is indicated by the arrow F.

In the lower region of the transfer device 10 and thus relative to the rotation axis D substantially diametrically opposite to the transfer station 30, a transfer station 32 is provided. The transfer station 32 comprises a further conveying device 20, which is shown as a chain conveyor, wherein the chain in a conventional manner radially outwardly projecting fingers 21, between which cells 22 are formed, in each of which a folding box FS can be used in the erected state. In addition, the further conveying device comprises a guide 23 for the folding boxes arranged in the cells 22.

The first support member 11 and the second support member 12 are each rotationally driven by its own, not shown servomotors, wherein the two support members 11 and 12 during a transfer operation on the one hand each rotational movement with a changing during a revolution rotational speed and on the other hand, a mutual relative movement or turn.

In the following, a transfer process will be explained with reference to FIGS. 1 to 7 in individual phases. In the phase shown in Figure 1 at the beginning of a transfer operation is a holding device 17 of the first support member 11 in the transfer station 30 and comes on its radially outer side with a supplied folding box FS in Appendix. By action of a negative pressure on the holding device 17 designed as a sucker, the folding box FS is taken over. The accepted folding box FS then turns together. men with the first support member 11 in the counterclockwise direction and reaches the Aufrichtstation 31 on which the outside of the carton with the counter sucker 25 comes into abutment (see Figure 4), whereby the carton FS is pulled apart in a known manner by a small amount. During the further movement of the folding box FS supporting holding device 17 between the Aufrichtstation 31 and the transfer station 32 of Aufrichtfinger 16 is effective. Practice the engagement of the cam roller 15 in the cam track 18, the righting gear 14 is driven so that the Aufrichtfinger 16, the folding box FS laterally to their desired shape (see Fig. 5 and 6). When the holding device 17 carrying the folding carton FS reaches the transfer station 32, the folding carton FS is completely turned on and can be inserted into a cell 22 of the secondary conveying device 20. The holding device 17 then the folding box FS free and returns a result of the further rotation of the first support part 11 back to the transfer station obe ^¬ ren 30th

While the holding devices 17 of the first support member 11 are in the transfer station 30 or in the Aufrichtstation 31 or in the transfer station 32 (hereinafter called Arbeitsstatio NEN), rotates the 1st support member with a ge ^¬ ringeren rotational speed than in the Ar between ^¬ beitsstationen lying areas. As a result, the 1st support part makes a movement with changing rotational speeds during one revolution. Since the Hal ^¬ Chippings 13.1 and the legendary mounted holding devices 17 of the first support member arranged in pairs diametrically opposite ^¬ lying and since the transfer station 3 is arranged relative to the axis of rotation D, diametrically opposite to the transfer station 32, it is achieved that at a slowing down of the rotational movement of a holder 13.1 or a holding device 17 mounted thereon in the transfer station 30 at the same time a corresponding reduction in the speed of the diametrically opposed holding device 17 is ensured in the transfer station 32.

Also, the second supporting part 12 performs a corresponding Drehbewe ^¬ supply with an off during one revolution of changing rotational speed and in particular a reduction in the speed of rotation of the holding devices in the areas of the work stations. Since the holding devices 17 of the two support parts 11, 12 are always in different areas, which are traversed at different speeds, perform the two support members 11 and 12 during one revolution, a mutual relative rotation about the axis of rotation D.

In the phase shown in Figure 1, the brackets

13.1 of the first support member 11 and the brackets 13.2 of the second support member 12 are arranged offset by 45 ° in the circumferential direction to each other. Since the first support member 11 and the second support member 12 rotate in this phase with approximately the same rotational speed, this also means that even after a rotation of about 30 ° in the circumferential direction nor the mutual distance of the brackets 13.1 and 13.2 of the two support members 11th and 12 are given, as shown in Figure 2.

As in the further course of rotation, the brackets

13.2 of the second support member 12 and the holding devices 17 mounted thereon approach one of the workstations 30, 31, 32, the speed of the second support member 12 is reduced, whereby the brackets 13.1 of the first support member 11 and stored thereon fixtures 17 due to their higher instantaneous speed on the brackets 13.2 of the 2nd support member 12 accumulate, but without touching them. This state is shown in FIG.

In the further course of the rotation, the rotational speed of the first support member 11 is reduced because its brackets 13.1 approach the workstations, while at the same time the speed of the second support member is increased again, since they leave the area of the workstations. In an intermediate position according to FIG. 4, in which the holders 13.1 of the first support part and the holding devices 17 mounted thereon are located in the workstations, the second support part 12 again has a position with an offset of 45 ° in the circumferential direction to the first support part 11 reaches and then in turn runs due to the higher instantaneous speed on the brackets 13.1 of the first support member (see Figure 5), which is then compensated again by increasing the rotational speed of the first support member 11.

FIG. 8 shows a schematic view of a second embodiment of the transfer device 10 according to the invention. This differs from the first embodiment according to FIG. 1 with regard to the number of carrying parts and the holding devices. The first support member 11 according to Figure 8 has three brackets 13.1 and a corresponding number of holding devices 17, Aufrichtgetrieben 14, Aufrichtfingern 16 and cam rollers. The three brackets 13.1 are equally distributed over the circumference of the first support member 11, that is arranged in a mutual angular offset of 120 ° in the circumferential direction. The second support member 12 also has three equally distributed over the circumference arranged, outwardly facing brackets 13.2, on each of which a righting 14 with a Aufriehtfinger 16 and a radially outwardly facing holding device 17 are arranged in the form of a nipple. The brackets 13.2 are distributed uniformly over the circumference of the second support member 12 and thus arranged in a mutual angular offset of 120 ° in the circumferential direction.

In addition to the first support member 11 and the second support member 12, a third support member 12a is provided in the embodiment of FIG 8, which is also in the form of a substantially circular plate or a disc-shaped wheel and rotatable about the pivot bearing 24 the axis of rotation D is mounted. The third support member 12a also has three equally distributed over the circumference, outwardly ^¬ facing mounts 13.3, where each a righting 14 with a Aufriehtfinger 16 and a radially outwardly facing holding device 17 are arranged in the form of a nipple. The brackets 13.3 are distributed uniformly over the circumference of the third support member 12a and thus arranged in a mutual angular offset of 120 ° in the circumferential direction.

To illustrate the mutual arrangement of the brackets in the circumferential direction, the brackets 13.1 of the first support member 11 with the numeral "1", the brackets 13.2 of the 2nd support member 12 with the numeral "2" and the brackets 13.3 of the 3rd Support member 12a with the numeral "3" specially marked ^¬ draws. As Figure 8 shows, the brackets of the three support members 11, 12 and 12a are arranged in the circumferential direction so that in each case on the brackets 13.1 of the 1st support member 11, a bracket 13.2 of the second support member 12 and on this one Bracket 13.3 of the 3rd support 13.3 follows (consequence: 1-2-3-1- 2-3 ...).

Each support member 11, 12 and 12a is driven by its own drive motor, so that the functionality we ^¬ sentlichen the functionality of the transfer device of Figure 1 corresponds, to be referred to the description thereof.

Between the support members 11 and 12 or 11, 12 and 12 a and the holding devices 17 mounted thereon is given by a time-staggered increase and decrease in the rotational speed, a mutual relative rotation. This configuration makes it possible to operate the holders 17 in the area of work stations with a lower rotational speed than in the areas between the workstations and to ensure ho ^¬ he efficiency of the transfer device by the arrangement of at ^¬ least two supporting parts structure mentioned anyway.

Claims

claims

Transfer device for transferring a lying flat folding box (FS) to a further conveying device (20) with simultaneous erection, with a rotationally driven support member (11) which is rotatable about a rotation axis (D), and with at least one rotationally driven further support member (12, 12a ) which is rotatable coaxially with the support part (11) about the rotation axis (D), the support parts (11, 12, 12a) each carrying at least one holding device (17) and a rotational movement with a changing during a revolution rotational speed and a perform mutual relative rotation, wherein the folding box (FS) in a transfer station (30) by the holding device (17) and take over a curved path to a transfer station (32) transportable and there to the further conveying device (20) can be handed over, characterized in that each supporting part (11, 12, 12a) carries a plurality of circumferentially spaced holding devices (17).

Transfer device according to claim 1, characterized in that the holding devices (17) of the supporting parts (11, 12, 12a) are arranged alternately successively in the circumferential direction.

Transfer device according to claim 1 or 2, characterized in that two support parts (11, 12) are provided, each carrying three to five holding devices (17).

Transfer device according to claim 1 or 2, characterized in that three supporting parts (11, 12, 12a) are seen in front, each carrying two to four holding devices (17).

Transfer device according to one of claims 1 to 4, characterized in that each support member (11, 12, 12a) is formed by a disc-like wheel.

Transfer device according to claim 5, characterized in that the wheels are aligned parallel to each other.

Transfer device according to one of claims 1 to 6, characterized in that the supporting parts (11, 12, 12 a) are driven independently by means of a Antriebsvor direction.

Transfer device according to one of claims 1 to 7, characterized in that the holding devices (17) are distributed uniformly over the circumference of the support member (11, 12).

9. Transfer device according to one of claims 1 to 8, characterized in that the holding devices (17) are moved on a circular path.

10. Transfer device according to one of claims 1 to 9, characterized in that the folding boxes (FS) of the transfer station (30) can be fed in an isolated row.

11. Transfer device according to one of claims 1 to 10, characterized in that each holding device (17) is associated with a Aufrichtfinger (16) which is movable by means of a righting gear (14).

12. Transfer device according to one of claims 1 to 11, characterized in that between the transfer station (30) and the transfer station (32) a Aufrichtstation (31) is arranged, which has a counter sucker (25), the rotational movement of the folding box (FS ) follows in sections.